ZIP Codes in Plattsburgh, NY
Plattsburgh uses 2 ZIP codes, all in Clinton County. Pick one below for details, or look up the full nine-digit ZIP+4 for a specific street address.
All 2 Plattsburgh ZIP codes
| ZIP | Type | County | Population |
|---|---|---|---|
| 12901 | standard | Clinton | 31,447 |
| 12903 | standard | Clinton | 1,824 |
Finding a ZIP+4 in Plattsburgh
Knowing which of these 2 ZIP codes covers an address only gets you partway. The four-digit extension identifies the specific delivery point — typically one side of one block. Two houses facing each other on the same Plattsburgh street almost always have different ZIP+4 codes even though they share all five leading digits.
Appending ZIP+4 to a mailing list?
Upload a CSV of Plattsburgh addresses and download it complete.